Extreme Heat Disrupting Travel Plans

A new study has revealed that extreme heat significantly alters people’s daily routines and transportation choices. This research, conducted by Arizona State University, the University of Washington, and the University of Texas at Austin, is titled “Understanding How Extreme Heat Impacts Human Activity-Mobility and Time Use Patterns.”

The research team analyzed data from the American Time Use Survey and weather information from NOAA, focusing on 11 major U.S. metropolitan areas. Findings indicate that on extremely hot days, people tend to stay indoors more, reduce outdoor activities, and avoid non-essential travel.

Changing Travel Patterns

The study uncovered a notable shift in transportation preferences during heat waves. Car usage increases, while walking, biking, and public transit trips decrease significantly.

Public transit usage drops by nearly 50% on extremely hot days as people opt for air-conditioned private vehicles. This trend poses challenges for cities aiming to promote sustainable transportation options.

Importantly, the research highlights that extreme heat disproportionately affects vulnerable groups. Low-income individuals and those without access to cars, who often rely on walking or public transportation, face greater exposure to dangerous temperatures. These groups also tend to have less flexibility in their work schedules, necessitating travel even in oppressive heat.

The study also found that older adults struggle more to adapt their routines during heat waves, potentially leading to increased social isolation. Professor Pendyala emphasized that extreme heat exacerbates existing inequities in mobility and activity participation. He called for targeted policy interventions to protect the most vulnerable populations from the impacts of rising temperatures.

As cities worldwide grapple with the effects of climate change, this research points to the urgent need for adaptive strategies to ensure equitable access to transportation and maintain quality of life for all residents during extreme heat events.

Aakhir Tak Editor-in-Chief

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